C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Are these good heads?

Thread Tools
 
Search this Thread
 
Old Jul 22, 2005 | 10:55 AM
  #1  
Aidoneus's Avatar
Aidoneus
Thread Starter
Advanced
 
Joined: Jul 2004
Posts: 98
Likes: 1
From: Maple Grove Minnesota
Default Are these good heads?

I was originally planning to just have my stock L98 heads ported, but I came acrossed these heads on Ebay http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW

What do you guys think, would this be a better deal than porting my stock L98 heads? (It's about the same amount of money, less if I can sell my stock L98 heads)
Reply
Old Jul 22, 2005 | 11:02 AM
  #2  
hz900's Avatar
hz900
Melting Slicks
20 Year Member
 
Joined: Feb 2002
Posts: 2,699
Likes: 2
From: The Black Hole LA
Default

The only thing I don't like about those heads are the large combustion chamber, other than that I can't offer any good advice.

Just an FYI, you can get the Dart aluminum heads for less than that on ebay (~$1100 after shipping ect.), and your original D-ports will sell for around $300-$350 on ebay. I just did this with my build, only I bought a set of Brodix heads used from a forum member, but was about to pull the trigger on the Darts.
Reply
Old Jul 22, 2005 | 11:02 AM
  #3  
Aidoneus's Avatar
Aidoneus
Thread Starter
Advanced
 
Joined: Jul 2004
Posts: 98
Likes: 1
From: Maple Grove Minnesota
Default

Here is more info I believe on these heads (#1038):

195cc SBC Street Head Part Numbers
CNC Ported Pairs of Cylinder Heads Complete With Parts and Ready to Install


CNC Street Ported Heads
195cc Street Heads, Straight Plug w/heat riser, 74cc 1036*
195cc Street Heads, Straight Plug w/heat riser, 68cc 1034*
195cc Street Heads, L98 Angle Plug w/heat riser, 74cc 1038*
195cc Street Heads, L98 Angle Plug w/heat riser, 68cc 1040*
Competition Package CNC Ported Heads
Description Part Number
195cc Street Heads, Straight Plug w/heat riser, 74cc 1091*
195cc Street Heads, L98 Angle Plug w/heat riser, 74cc 1094*

Stage 1 Bare Heads (no parts or porting) are available.
*Only models with heat riser (marked by an asterisk)
are emissions legal, all others are not legal for sale or use on
pollution controlled motor vehicles in the United States.


--------------------------------------------------------------------------------

Basic Package Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
70% to 100% CNC Ported Intake Ports
3-angle Valve Job
Intake Valve, 2.020" standard length, AFR #7204 Comp PKG #7002
Exhaust Valve, 1.600" standard length, AFR #7219 Comp PKG #7057
1.450" OD Hydraulic Dual Valve Spring, 120 lbs. on seat, .550" maximum lift, AFR #8020 Comp PKG #8015
10º 4140 Chrome Moly Retainers, AFR #8510
10º Valve Locks, AFR #9005
3/8" Rocker Studs, AFR #6410
Guide Plates, AFR #6105
Valve Seals, AFR #6611
Hardened Shims, AFR #8043
Intake Valve Seats, AFR #9060
Exhaust Valve Seats, AFR #9070
Bronze Valve Guides, AFR #9050
Special orders available upon request.

All Accessory Holes are Predrilled & Tapped!

Specifications, Features, and Supporting Components
Head Torque 65-70 Ft. Lbs.
Rocker Stud Torque 55-60 Ft. Lbs.
Intake Port Gasket, 1.280”x2.090” w/ 3/8" radius, AFR #6810
Important: Do not port match your intake manifold to this Fel-Pro gasket, as they do not exactly fit AFR heads.
Exhaust Port Gasket Fel Pro #1404, AFR #6834
Head Gasket 350cid Fel Pro #1003, AFR #6800
400cid Fel Pro #1014, AFR #6802
Head Bolts & Studs Standard ARP, AFR #6310 & #6305
Head Bolt Washers Manley, AFR #6320
Stud Girdle AFR #6201
Suggested Manifold Edelbrock RPM Performer, AFR #5030
Spark Plug Starting Range AC FR3LS
Combustion Chambers 74cc or 68cc
Spring Pocket can be cut to 1.625, no deeper.
Valve Spacing Standard
Rocker Arms Standard
Valve Angle 23º
Angle Mill .008” per cc
Flat Mill .006” per cc
Pushrods 5/16” Hardened AFR #6600 & #6601

Note: Milling head deck will affect flow numbers

Last edited by Aidoneus; Jul 22, 2005 at 11:04 AM. Reason: More specific information
Reply
Old Jul 22, 2005 | 11:29 AM
  #4  
red L98's Avatar
red L98
Melting Slicks
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jul 2003
Posts: 2,284
Likes: 4
From: Canton MI
Default

if its the 100% CNC , yeah it a sweet head few guys went 10s on this head. low 11 all day with a good combo
Reply
Old Jul 22, 2005 | 03:55 PM
  #5  
pwrful c4's Avatar
pwrful c4
Burning Brakes
 
Joined: Jun 2002
Posts: 1,159
Likes: 0
From: royal palm beach florida
Default

Originally Posted by red L98
if its the 100% CNC , yeah it a sweet head few guys went 10s on this head. low 11 all day with a good combo
Good advice.
Reply

Get notified of new replies

To Are these good heads?





All times are GMT -4. The time now is 11:29 PM.

story-0
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-1
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-2
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-3
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-4
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-5
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-6
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-7
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-8
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-9
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE